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Witcher 2: Weird physics corruption after changing video cards

post #1 of 5
Thread Starter 
I hope someone is also experiencing this because I have searched for days on the net for clues as to what has caused this issue.

Before last week I had been running 2x5970's in crossfire on Catalyst 12.6 (i think) and playing the hell out of the Witcher 2. It ran ok, enough that I could play it, but there was some obvious issues that game was having with my cards and drivers. Being fed up with having to constantly hold the hand of every game that I introduced to my 5970's with rarely any success, I gave up and ordered an EVGA GTX 680 FTW 4GB. Having played the witcher 2 so long, I was very much aware of the differences I saw when I booted it up on my new 680 for the first time. First thing I noticed was that it ran like a dream drool.gif but then after a few minutes I witnessed something that I'd never witnessed before. Geralt's hair and any objects that hanging off of him that used physics ( i asume) were being very very erratic and bouncing unnaturally from side to side in such a way that I knew something was definitely wrong. This only happens when I move him, walking our running.

I did not notice any other physics based objects in the world exhibiting the same erratic behavior.Nothing changed software or hardware-wise other than my video card and the Display driver's, which are the 304.48 Beta drivers. As soon as I installed the card is when I began seeing this.

Please help if you can
post #2 of 5
Thread Starter 
I found a solution last night. Though this did not 100% fix the issue it did fix about 90% of it or enough to barely notice.

So once I fix the issue it appeared that there was more going on than the cracked out physics. Appears that mouse controls were very jumpy as well. There has to be something wrong with these Nvidia beta drivers ( 304.48 ) because I went in to the driver settings and changed the Render ahead frame limit to 1. That did it.

Now, does anyone have any ideas as to why that setting has the effect that it does on my issue?
post #3 of 5
Did you replace your graphics card with a fresh OS install? If not, did you make sure to clean out previous AMD drivers (driver sweeper/atiman uninstaller/etc...)?
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Peon
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post #4 of 5
Thread Starter 
Yeah, good point. So I did not do a fresh OS install. Like I said nothing changed but the Video card and the Display driver. I did however, do an uninstall and a pass on driversweeper to clean off the old catalyst driver but installing 304.48beta. To be honest I've not really experienced any other issues any other games that I thought to be driver related other than this. Dumb Question: Is a clean OS install a necessity when changing out hardware such as this? If so can you tell me why.
post #5 of 5
Some game engine physic is based on framerate. Same issue on L.A. Noire if you tweak or force the game to 60FPS. The game physic goes whack.

So perhaps, your new card is giving you more FPS.
     
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Core i7 3930K Asus Sabertooth X79 EVGA 6GB GTX TITAN 16GB Samsung 30nm 
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Vertex 4 256GB 5.500TB HHDs Samsung Blu-Ray DVD-RW Corsair H100 (Broken except the pump) 
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Windows 8 Pro 64bit 27" Apple Cinema Display (1440p) 27" Crossover 27Q LED-P (1440p) SteelSeries 6Gv2 
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